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Matthias Krüger
eabe4620e5
Avoid invalid spans in dotdotdot rest pattern suggestions Fixes rust-lang/rust#156316 The parser recovers Unicode confusables such as `···` as `...`, while keeping the original source span over the multibyte characters. `recover_dotdotdot_rest_pat` built its suggestion by subtracting `BytePos(1)` from the end of that recovered token span. For multibyte characters, that can create a span boundary inside a UTF-8, causing diagnostic emission to ICE. This changes the suggestion to replace the whole recovered token span with `..` instead of slicing off one byte.